minor

src/explorviz/live_trace_processing/filter/reduction/TracesSummarizationFilter.java

@@ -3,6 +3,7 @@ package explorviz.live_trace_processing.filter.reduction;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
+import java.util.Map.Entry;
 import java.util.TreeMap;
 
 import explorviz.live_trace_processing.Constants;
@@ -89,15 +90,21 @@ public class TracesSummarizationFilter extends AbstractFilter implements ITraceR
 	private void processTimeoutQueue(final long timestamp) {
 		final long bufferTimeout = timestamp - maxCollectionDuration;
 		final List<Trace> toRemove = new ArrayList<Trace>();
-		for (final TracesSummarizationBuffer traceBuffer : trace2buffer.values()) {
-			if (traceBuffer.getBufferCreatedTimestamp() <= bufferTimeout) {
-				final Trace aggregatedTrace = traceBuffer.getAggregatedTrace();
+		for (final Entry<Trace, TracesSummarizationBuffer> traceBufferEntrySet : trace2buffer
+				.entrySet()) {
+
+			if (traceBufferEntrySet.getValue().getBufferCreatedTimestamp() <= bufferTimeout) {
+				final Trace aggregatedTrace = traceBufferEntrySet.getValue().getAggregatedTrace();
+
 				deliver(aggregatedTrace);
-				toRemove.add(aggregatedTrace);
+				toRemove.add(traceBufferEntrySet.getKey());
+			}
+
 		}
+		for (final Trace trace : toRemove) {
+			if (trace2buffer.remove(trace) == null) {
+				System.out.println("no trace found :(");
 			}
-		for (final Trace traceEventRecords : toRemove) {
-			trace2buffer.remove(traceEventRecords);
 		}
 	}